FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
Java/Main.java at main · akashdip2001/Java · GitHub
akashdip2001
/
Java
Public
Notifications
You must be signed in to change notification settings
Fork
0
Star
2
Code
Issues
0
Pull requests
0
Actions
Projects
Security and quality
0
Insights
Additional navigation options
Code
Issues
Pull requests
Actions
Projects
Security and quality
Insights
Expand file tree
Breadcrumbs
Java
/
Main.java
Copy path
More file actions
More file actions
Latest commit
History
History
History
296 lines (265 loc) · 8.9 KB
Breadcrumbs
Java
/
Main.java
Copy path
File metadata and controls
296 lines (265 loc) · 8.9 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
package
com
.
akashdipmahapatra
;
import
java
.
util
.
Scanner
;
public
class
Main
{
static
int
sum
(
int
a
,
int
b
){
return
a
+
b
;
}
public
static
void
main
(
String
[]
args
) {
// Write your code here
// System.out.println("Hello World");
/* Variables
Just Like:
-Water - Bucket
-Masala - box
-Lunch - LunchBox
In Java:
Variables are containers which store data values
String, int, float, char, boolean
How to declare variables:
syntax - <dataType> <variableName> = <value>;
*/
String
name
=
"Akashdip"
;
String
channel
=
"AOT"
;
// System.out.println(name);
// System.out.println(name.length());
// System.out.println(name.toUpperCase());
// System.out.println(name.toLowerCase());
// System.out.println(name + " from\" " + channel);
// System.out.println(name + " from\\ " + channel);
// System.out.println(name + " from\t " + channel);
// System.out.println(name + " from\n " + channel);
// System.out.println(name.contains("Aka"));
// System.out.println(name.charAt(2));
// System.out.println(name.endsWith("ip"));
// System.out.println(name.indexOf("dip"));
int
numb1
=
4
,
numb2
=
7
;
// System.out.println(Math.max(numb1, numb2));
// System.out.println(Math.min(numb1, numb2));
// System.out.println(Math.sqrt(36));
// System.out.println(Math.abs(-36));
// System.out.println(Math.abs(6));
// System.out.println(Math.random());
// System.out.println(4+(8-4)*Math.random());
// System.out.println(4+(8-4)*Math.random());
// System.out.println(4+(8-4)*Math.random());
// System.out.println(4+(8-4)*Math.random());
// System.out.println(4+(8-4)*Math.random());
int
a
=
45
,
x
=
56
,
y
=
67
;
float
b
=
45.22f
;
boolean
isAdult
=
false
;
// System.out.println(x);
// System.out.println(b);
// System.out.println(isAdult);
/* Rules for constructing name of variables in Java
1. Can contain digits, underscores, dollar signs, letters
2. Should begin with a letter, $ or _
3. Java is case sensitive language which means that
harry and Harry are two different variables altogether.
4. Should not contain whitespaces
5. You cannot use reserved keywords from Java
*/
/*
Two types of Java Data Types:
1. Primitive - byte (1 byte), short (2 bytes), int(4 bytes), long (8 bytes), float(4 bytes),
double (8 bytes), boolean(1 bit), char (2 bytes).
2. Non Primitive or Reference Data Type -
*/
byte
u
= -
56
;
double
d
=
45.635435345d
;
// System.out.println(d);
char
grade
=
'A'
;
// System.out.println(grade);
/* Operators in Java
Operand, operator, Operand = Result
4 + 7 = 11
Types of operators in Java
Arithmetic operators
Assignment operators
Logical Operators
Comparison Operators
*/
int
num1
=
45
,
num2
=
78
;
num1
+=
3
;
num2
-=
8
;
// Explore these operators - *=, /=, %=
// System.out.print("The value of num1 + num2 is ");
// System.out.println(num1 + num2);
//
// System.out.print("The value of num1 - num2 is ");
// System.out.println(num1 - num2);
//
// System.out.print("The value of num1 * num2 is ");
// System.out.println(num1 * num2);
//
// System.out.print("The value of num1 / num2 is ");
// System.out.println(num1 / num2);
//
// System.out.print("The value of num1 % num2 is ");
// System.out.println(num1 % num2);
// System.out.println(num2++);
// System.out.println(++num1);
// System.out.println(num1--);
// System.out.println(--num1);
/*
* Comparison Operators:
* 1. == : checks for equality of two values
* 2. != : checks if two values are not equal
* 3. <
* 4. >
* 5. <=
* 6. >=
*
* Logical Operators:
* 1. && - Logical and operator - returns true only if both conditions are true
* 2. || - Logical or operator - returns true if any one condition is true
* 3. ! - Logical not - Reverse the result from true to false and vice versa
* */
// Taking user input in Java
// Scanner scan = new Scanner(System.in);
// System.out.println("Enter Your Age");
// int age = scan.nextInt();
// System.out.println(input);
// If-else conditionals
// if(age>20){
//
// System.out.println("You are an adult");
// }
// else if(age>5){
// System.out.println("You are not a kid");
//
// }
// else{
// System.out.println("You are a kid");
// }
// Switch statement in Java
// switch (age){
// case 12:
// System.out.println("You are 12 years old");
// break;
// case 56:
// System.out.println("You are 56 years old");
// break;
// case 16:
// System.out.println("You are 16 years old");
// break;
// default:
// System.out.println("You did not match any of the cases");
// }
// Quick Quiz: print sunday to saturday based on numbers 1 to 7 typed by the user
// Loops
/*
While Loop
while(condition){
// This code will keep executing until the condition is true
}
*/
// int i = 0;
// while(i<100){
// System.out.println(i);
// i += 1;
// }
/*
Do While Loop
do{
// This code will keep executing until the condition is true
}while(condition)
*/
// int j = 0;
// do{
// System.out.println(j);
// j += 1;
// }while(j>100);
/*
For Loop
for(st1;st2;st3){
//Code to be executed
}
*/
//
// for(int i=0;i<=10;i++){
// if(i==2){
// continue;
// }
//// else{
//// System.out.println(i);
//// }
// System.out.println(i);
// }
// Java Arrays
// int [] marks = {1,2,3,5};
// marks[3] = 34; // this will update marks[3]
// System.out.println(marks[0]);
// System.out.println(marks[3]);
//
// // Classical way to iterate an array
// for(int i=0;i<marks.length;i++){
// System.out.println(marks[i]);
// }
// System.out.println("This is for each loop:");
//
// // For each loop
// for(int value:marks){
// System.out.println(value);
// }
//
// int [][] matrix = {{1,2,3},
// {4,5,6}};
// System.out.println(matrix[0][1]);
//
// String [] cars = {"Maruti Harry", "Maruti", "Suzuki", "Innova", "Ford Titanium"};
// for(String value:cars){
// System.out.println(value);
// }
// Try - Catch
// String [] cars = {"Maruti Harry", "Maruti", "Suzuki", "Innova", "Ford Titanium"};
//
// try{
// System.out.println(cars[3]);
// }
// catch(Exception e){
// System.out.println(e);
// }
//
// System.out.println("Masoom");
// System.out.println(sum(5, 7));
float
number_1
,
number_2
;
System
.
out
.
println
(
"Enter first number"
);
Scanner
scan
=
new
Scanner
(
System
.
in
);
number_1
=
scan
.
nextFloat
();
System
.
out
.
println
(
"Enter second number"
);
// Scanner scan2 = new Scanner(System.in);
number_2
=
scan
.
nextFloat
();
System
.
out
.
print
(
"You have Entered "
);
System
.
out
.
print
(
number_1
);
System
.
out
.
print
(
" and "
);
System
.
out
.
println
(
number_2
);
String
prompt
=
"Enter 0 for addition, 1 for "
+
"subtraction, 2 for multiplication and 3 for division"
;
System
.
out
.
println
(
prompt
);
int
input
=
scan
.
nextInt
();
switch
(
input
){
case
0
:
System
.
out
.
println
(
"Adding these numbers"
);
System
.
out
.
print
(
"The result is: "
);
System
.
out
.
println
(
number_1
+
number_2
);
break
;
case
1
:
System
.
out
.
println
(
"Subtracting these numbers"
);
System
.
out
.
print
(
"The result is: "
);
System
.
out
.
println
(
number_1
-
number_2
);
break
;
case
2
:
System
.
out
.
println
(
"Multiplying these numbers"
);
System
.
out
.
print
(
"The result is: "
);
System
.
out
.
println
(
number_1
*
number_2
);
break
;
case
3
:
System
.
out
.
println
(
"Dividing these numbers"
);
System
.
out
.
print
(
"The result is: "
);
System
.
out
.
println
(
number_1
/
number_2
);
break
;
default
:
System
.
out
.
println
(
"Invalid input"
);
}
}
}
Back
|
FazBrowse Home
|
New Git URL